Phase 3 section
Pokemon Yellow Vermilion Gym Walkthrough
Vermilion Gym section for the Pokemon Yellow walkthrough with wild Pokemon, trainers, items, hidden items, coordinates, and boss strategy.
Solve the trash-can switch puzzle and earn the Thunder Badge. This page is a standalone section for Phase 3: Thunder Badge, with source-backed Yellow encounter, trainer, item, hidden item, and boss data.
Source maps
Vermilion Gym.
Wild rows0 Trainers4 Items1
Route plan
Catch Diglett or Dugtrio first if you want the simplest Surge answer.
Wild Pokemon
No wild Pokemon are sourced for this section.
Trainers
| Route order | Trainer | Team | Reward | Optional / rematch note |
|---|---|---|---|---|
| 1. Vermilion Gym (5, 1) |  Lt. SurgeParty #1 | $2,772 | One-time trainer; no rematch in Yellow. | |
| 2. Vermilion Gym (9, 6) |  GentlemanParty #3 | $1,540 | One-time trainer; no rematch in Yellow. | |
| 3. Vermilion Gym (3, 8) |  RockerParty #1 | $500 | One-time trainer; no rematch in Yellow. | |
| 4. Vermilion Gym (0, 10) |  SailorParty #8 | $720 | One-time trainer; no rematch in Yellow. |
Items And Hidden Items
| Item | Type | Area / direction | Coordinate | Requirement |
|---|---|---|---|---|
| TM24 Thunderbolt | Gym reward | Defeat Lt. Surge. | - | Defeat Lt. Surge. |
Boss Strategy
| Boss / branch | Team | Reward | Danger notes | Practical counters |
|---|---|---|---|---|
| Lt. SurgeLt. Surge | $2,772 | Raichu is fast, hits hard, and can snowball if you let paralysis stack. | Diglett or Dugtrio from Diglett's Cave is the clean answer. Geodude/Graveler also walls Electric attacks, while Ivysaur can take hits but does not hit Magnemite-style resistances because those are not Surge's Yellow team. |
Completion Checklist
- Cut the tree to enter.
- Defeat the gym trainers.
- Find both trash switches without leaving the room.
- Beat Lt. Surge.
- Verify the Yellow encounter rows before leaving if you are filling the Pokedex.
- Use the item rows as a visible-item and hidden-item sweep before moving to the next section.
Sources
pret/pokeyellow: wild encounters, trainer parties, trainer money, map object events, hidden event items, rods, trades, and prize Pokemon.- Encounter odds aggregate the Gen I ten-slot rates: 51/256, 51/256, 39/256, 25/256, 25/256, 25/256, 13/256, 13/256, 11/256, and 3/256.
- Yellow has no day/night encounter column; tables use Game, Method, and Condition instead.